Best Time to Fly IAD to BDL: On-Time Stats by Hour & Airline
Washington Dulles International → Bradley International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 86.5% of Washington (IAD) to Hartford (BDL) flights arrived on time (1,077 scheduled flights). That is 8.8 points above the national average of 77.6%.
Republic Airways was the most punctual of the 2 airlines on the route at 86.7%, while United Airlines trailed at 86.4%.
April has been the best month (92% on time) and Sunday the weakest day of the week (81%).
1.9% of flights were cancelled, versus 1.8% nationally.
IAD to BDL on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Republic Airways | 86.7% | 68 min | 4.2% | 165 |
| United Airlines | 86.4% | 64 min | 1.4% | 912 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly IAD to BDL
On-time arrival % by scheduled departure hour (local time), 1,829 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 8am–9am | 91.6% | 1.6% | 315 |
| 9am–10am | Limited data | 4 | |
| 12pm–1pm | 90.0% | 1.8% | 389 |
| 5pm–6pm | 81.6% | 1.5% | 476 |
| 10pm–11pm | 79.6% | 0.9% | 645 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on IAD to BDL
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | Limited data | 29 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 82.8% | -3.5 pts | 0.0% | 58 |
| Summer peak (Jun 15 - Aug 15) | 75.4% | -10.9 pts | 2.6% | 268 |
| All other days | 86.2% | — | 1.2% | 1,474 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).